Year	Percent
1990	24.049
1991	24.049
1992	24.049
1993	24.049
1994	24.049
1995	24.049
1996	24.049
1997	24.049
1998	24.049
1999	24.049
2000	24.049
2001	24.049
2002	24.049
2003	24.049
2004	24.45
2005	23.663
2006	22.856
2007	21.959
2008	21.085
2009	20.844
2010	20.219
2011	19.492
2012	18.779
2013	18.105
2014	17.539
2015	17.072
2016	16.493
2017	16.26
2018	16.027
2019	15.795
2020	15.562
2021	15.329
2022	15.096
2023	14.863
2024	14.631
2025	14.398
2026	14.165
2027	13.932
2028	13.699
2029	13.467
2030	13.234